I recently got a promo code from amazon due to a shipping mix-up. I want to pre-order the batman begins deluxe dvd, but the code expires before this dvd comes out. Can i still use it for this film or do i have to get something else? Does anyone else have a similar experience?

It should be fine as long as you don't cancel the order after the expiration date.

^^
Lasermovies is correct. I've done this a few times with no problems.